Oil well filter



E. H. BREAUX oIL WELLFILTER Nov. 14, 1950 Filed Oct. l, 1947 Fig. 3

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Inventor E /fon H. Breaux By Q and im i /L/ Wg@ Patented Nov. 14, 1950 UNITED STATES TENT OFFICE 1 Claim. 1

The present invention relates to new and useful improvements in iiiters and more particularly to a lter for an oil well casing.

An important object of the invention is to provide a lter of this character which is adapted for connecting to an oil weil casing and embodying filtering elements to admit the passage of oil into the casing and to effectively exclude the entrance of sand and water into the casing.

A further object is to provide a device of this character of simple and practical construction, which is efficient and reliablein operation, relatively inexpensive to manufacture and otherwise well adapted for the purposes for which the same is intended.

Other objects and advantages reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming part hereof, wherein like numerals refer to like parts throughout, and in which:

Figure 1 is a side elevational View with parts broken away and shown in section, and

Figures 2 and 3 are transverse sectional views taken respectively on the lines 2-2 and 3-3 of Figure 1.

Referring now to the drawings in detail wherein for the purpose of illustration I have disclosed a preferred embodiment of the invention the numerals 5 and 9 designate upper and lower pipe sections which are smooth at one end and threaded at their opposite ends as shown at l.

Inner and outer cylindrical metal perforated or foraminous filtering members 8 and 9 have their ends telescoped over the smooth ends of the pipe sections and secured thereto by welding, as shown at I!! or by other permanent attachin-g means. A sheet of chamois skin Il is positioned between the filtering members 8 and 9 to provide an intermediate cylindrical filtering element. The inner and outer lteringmembers 8 and 9 may be constructed of any suitable material, such as screening, or may be rigid perforated metal tubing, if desired.

In the operation of the device, the threaded end 'l of the pipe section 5 is connected in a well casing to be lowered in the well therewith and the lower end of pipe section 6 is closed by a cap I2 or other suitable means. The chamois skin ltering element Il is supported against collapsing by the inner and outer filtering members 8 and 9 and oil is permitted to pass through the filtering element l i into the casing while sand and other solid substances are excluded as well as a large percentage of water contained in the well.

In View of the foregoing description taken in conjunction with the accompanying drawings it is believed that a clear understanding of the con` struction, operation and advantages of the device will be quite apparent to those skilled in this art. A more detailed description is accordingly deemed unnecessary.

It is to be understood, however, that even though there is herein shown and described a preferred embodiment of the invention the same is susceptible to certain changes fully comprehended by the spirit of the invention as herein described and the scope of the appended claim.

Having described the invention what is claimed as new is:

A filter for oil well casings comprising inner and outer perforated tubes, a chamois skin ller between the tubes, and means securing the assembled tubes and ller to a casing, said means comprising upper and lower pipe sections welded to the opposite ends of the tubes, said upper pipe section being secured to the lower end .of a casing and the lower pipe section being closed at its lower end.

ELTON H. BREAUX.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 560,399 Durbrow May 19, 1896 746,378 Redeld Dec. 8, 1903 921,337 Archer May 11, 1909 997,191 Hogarth July 4, 1911 1,341,755 Minton June 1, 1920 1,535,768 Davis Apr. 28, 1925 1,584,743 Hensley May 18, 1926 1,621,725 Hills Mar. 22, 1927 2,167,191 Vietti et al July 25, 1939 FOREIGN PATENTS Number Country Date 699 Great Britain A. D. 1868 

